It’s Mir running on my NVIDIA laptop. It differs from the pre-Brussels-sprint state in that

It doesn’t flicker terribly (or at all! Yay!), and

This branch doesn’t break rendering for everything not NVIDIA. This has involved rejigging the Platform abstractions at the heart of Mir’s graphics platform and GL renderer, but as an added bonus should result in the mesa-kms platform also gaining support for YUV buffers!